|
Accession number;07A0041880
|
| Title;Performance of Levee System at Flood Stage |
| Author;
AZUMA RYOUKEI
(Kyoto Univ.)
SEKIGUCHI HIDEO
(Kyoto Univ.)
ONO TETSU
(Kyoto Univ.)
|
Journal Title;Abstracts for Annuals. Disaster Prevention Research Institute, Kyoto University (CD-ROM)
|
Journal Code:S0431B
|
ISSN:
|
|
VOL.;NO.49;PAGE.NO.49C,225-235(2006)
|
| Figure&Table&Reference;FIG.17, TBL.1, REF.10 |
| Pub. Country;Japan |
| Language;English |
| Abstract;This study was motivated by the October 2004 levee-breaching case in the Maruyama River that took place under extremely high flood stage. The overflow and outburst brought about a range of sedimentary features to an adjacent paddy field with clayey subsoil. They included a plunge pool and two massive particulate ridges which were formed on either side of the central erosion-dominant zone. The breaching-induced topographical changes were precisely measured using digital photogrammetry and incorporated into a geographical information system (GIS), facilitating an analysis of the sediment budget. The severity of the inundating water was assessed based on a bedload transport theory, with the observation that only the large clay lumps were left on the central erosion-dominant zone. Furthermore, a discussion is made of the usefulness and limitations in a specially designed yet print-based, geomorphological classification map for the flood-prone Maruyama River basin that has witnessed land-use evolution over the past thirty years since its initial publication. (author abst.) |
|
|
|
Related Articles;
|
